.content {
    .banner{
        height: 545px;
        background-image: url('../images/S-banner.jpg');
        background-size:100%,100%;
        >ul {
            list-style: none;
            li {
                display: inline-block;
                width: 10px;
                height: 10px;
                border-radius: 50%;
                background-color: #a2d2e9;
            }
        }
    }
}
